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Performance enhanced absorbing boundary condition for electromagnetic modelling and simulation
Author(s) -
Wu Shihong,
Sun Yumei,
Chi Mingmei,
Chen Xiangguang
Publication year - 2020
Publication title -
international journal of numerical modelling: electronic networks, devices and fields
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.249
H-Index - 30
eISSN - 1099-1204
pISSN - 0894-3370
DOI - 10.1002/jnm.2760
Subject(s) - perfectly matched layer , boundary value problem , finite difference time domain method , convolution (computer science) , lattice (music) , finite difference method , mathematics , mathematical analysis , computer science , physics , optics , acoustics , machine learning , artificial neural network
Based upon the higher order (HO) concept and the convolution perfectly matched layer (CPML) formulation, the efficient and tight HO‐CPML implementation is proposed for electromagnetic (EM) simulation. The proposed formulation has the advantages of the higher order concept and the CPML in terms of enhancing absorbing performance and improving computational efficiency. Numerical examples including the half‐space soil/metal plate structure and the patch antenna radiation model are carried out in the finite‐difference time‐domain lattice to validate the effectiveness and efficiency. It can be demonstrated that the proposed HO‐CPML can further enhance the absorbing performance compared with the CPML and enjoy considerable computational efficiency compared with the other HO‐perfectly matched layers (HO‐PMLs). Meanwhile, the proposal can terminate arbitrary mediums without changing the update equations in the PML regions.